How to style native html elements

I’ve an ion-input element which is a wrapper around a native html input element
I want to style that native input element, how can I achieve this ?
I"m able to style it using developer tools, but from code this seems to be very difficult
<ion-input type='search' [(ngModel)]='searchProduct' (ionBlur)="searchFor($event)" placeholder='Search here' class='search-bar'> <ion-icon name='search'></ion-icon> </ion-input>
Basically I Just want to show my input like this in image
style
I did this using chrome developer tools, but from html I’m unable to do.
From html it puts the background to whole input including the icon, where I want to appear it like above.
how can I do this from code ?

IonInput comes with a getInputElement method. With this method and Angular’s Renderer2 class used in the AfterViewInit lifecycle hook you can add styles to the native input element like this:

First add a selector to the ion-input

 <ion-input #myioninput></ion-input>

Then update the associated page.ts to include something similar to this:

 import { Component, AfterViewInit, ViewChild, Renderer2 } from "@angular/core";
 import { IonInput } from '@ionic/angular';

 export class HomePage implements AfterViewInit {
   @ViewChild("myioninput") ionInputExample: IonInput;

  ngAfterViewInit() {
    this.ionInputExample.getInputElement().then(nativeInputInsideIonInput => {
       //apply whatever styles here
       this.renderer.setStyle(nativeInputInsideIonInput,'background-color','aquamarine');
    });
  }
}

Renderer2 also has an addClass method but I wasn’t able to get it to apply the class’s styles to the input element for some reason.